Definition 2. The Ring Finger refers to any digit on the right or left hand (but not the thumb) use to provide finger based stimulation to the anal Oring of a sexual partner during anal play.

Example 1: Sara was so excited to be engaged. She was showing everyone the new rock on her Ring Finger.

Example 2: Sara enjoys it when Carl fingers her asshole. Her preference is for him to use his long, middle finger as his Ring Finger. But she will take any digit she can get when that booty is up and arched from her organic spread.